Hydraulic valve



Feb. 3, 1942. J. w. CHILDRESS HYDRAULIC VALVE Filed July 17, 1940 3 Sheets-Sheet l I I" III O 25 2 "I "u 1" 3 1" [I I 5% O 22 "I I' l 10 Milli In ventor James 14/. Chi/dress- A iiomeys Feb. 3, 1942. w c p ss 2,272,110

HYDRAULIC VALVE Filed July 17, 1940 s Shee ts-Sheet ,2

I nve nior James W Chi/dress A tiomeys Feb. 3, 1942. w. CHILDRESS HYDRAULIC VALVE Filed July 17, 1940 a Sheets-Sheet s Inventor v r/ames 66/707968 A itorneys Patented Feb. 3, 1942 nvnRAUnIo-vALvE' I James Ohildress,- Columbia, Tenn. Application'July 194o,setia1 No. 346,050 1 Claim. (01. 6.0-,.52)

[This invention relates to a hydraulic valve, the generalobject of the invention being to provide a shank or stem'having a perforated head with valve forming members connected together by a pin which passes through'the hole in the head with the parts so constructed and arranged that the two valve members will be pressed outwardly upon the seat when the stem or shank. is

moved to valve closing position.

Another object of the invention is to provide a cylinder having a piston therein-connected: with the shank or stem and a supply of liquid with pump means: piped to the supply andpwith opening- 'l'passes through these faces. The

. plates 4 engage opposite: side edges of the guides "3 so'that the guides ,hold the two plates 4 apart I and whenthe shank .or stem!) is lowered itjwill move the plates '4 downwardly"through means of :the pint until the plates strikethe bottom oi'fthev housing and then further downward "movement of the stem or shank 9 will'cause the enlarged part 8 of the head toengage the bossesof'the .plates which forces the plates apart and presses {the plates firmly upon the seats 2 "so'that leakage is prevented through the parts When in raisedvposition'the plates with the head of the the cylinder and valves in the pipes whereby fluid can be pumped in either end of the cylinder to raise or lower the'valve.

This invention also consists in certain, other features of construction and in the combination stem are located in an opening in the closure part a of the housing with the shank passing through the upper end of the closure part and and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

.In describing the invention in detail, reference will be had to the accompanying drawings where-v i in like characters denote like or corresponding parts throughout the severalviews, and in which:

Figure 1 is a top plan view of the invention. Figure 2 is a section on the line 22 of Figure 1. 1

Figure 3 is a section on the line 3-3 of Figure 1 Figure 4 is a top plan view of the pump means.

Figure 5 is a section on the line 5-5 of Figure 4.

Figure 6 is a vertical sectional view through the tank. I I 1 Figure 7 is a view looking toward the inner face of one of the valve disks.

In these views the letter A indicates the casing I or housing of the valve means which is formed v through packing means I 0.

A cylinder II is fastened to the closure part a of thehousing by its flanged lower end I l being bolted to the closure part and a piston I2 is connected with the upperend of the stemand is located inthe cylinder.- A tankj l3 containing fluid ,or liquid-is supp rted on the cover part a and has a vent opening I4 at its top and a drain plug 5 is threaded in a drain openingadjacent the lower end of the tank. A pump'cylinder I6 is also supported by the cover part'c and contains a piston H, the stem |8zof whichis connected to a lever |,S pivoted toa bracket 20 fastened to a part of the cover a. A pipe 2| connects the tank with the pump cylinder and contains a check valve 22-opening toward-the pump I cylinder- U -shaped =pipes23 and .24 connect the upper end of the cylinder II with the lower end H thereof and a pipe 25 connects the central part of the pipe: 23 with the pump cylinder and contains a check valve 26 and valves 21 and 28 are located in the pipe 23 with the pipe 25 joining with the tubular parts for connection to the conduit to be controlled by the valve means and such parts are spaced at the innerends and said inner ends form valve seats 2. tically arranged guides 3 are located in the ca sing or housing and the gate or valve member iscomposed of the two plates 4 each of which has a substantially semi-circular boss 5 on its inner face which is of tubular construction to receive an end of a pin 6 which-connects the two plates together in spaced relation and this pin passes through a hole 1 made in the form of a slot and formed in the head 8 of astem or shank 9. The

head has its top part enlarged as shown at 8'- with its opposite faces tapering downwardly and the pipe 23 between these valves. A pipe" 29 connects the central part of the 'pipe 24 with the tank. l3 and valves 30 and 3| are located in the pipe 24 above and below thejunction of the pipe A pair of ver- 29 with the pipe 24.

Thus supposing the valve is open and the piston is in raised position it'is desired to lower the valve and piston. Valves 28 and 3|] are closed and valves 21 and 3| open., Thenwhen the. pump is. actuated fluid or liquid will be drawn from the "tank 13 through the'pipe 2| into the pump and i this liquid or fluid will be forced from the pump through the pipe 25. and through the upper-part r of the pipe 23 into the top part of the cylinderll which will force the piston downwardly to'close the valve and the fluid forced from the lower part of the cylinder II by the descending piston will flow through the lower part of the pipe 24 by the valve 3| through the pipe 29 into tank l3. Then when it is desired to raise the piston and the valve, valves 28 and 30 are open and valves 21 and 3| are closed so that When the pump is operated it will draw fluid from the tank through the pipe 2| and this fluid will be forced through the pipe 25 and. through the lower part of the pipe 23 by the valve 28 into the lower part of the cylinder ll so that the piston will be raised and the upward movement of the piston will force the fluid from the top of the cylinder II through the pipe 24 by the valve 39 and through the pipe 29 back to the tank.

By this arrangement one operator can open and close the valves and this with but little eflort and when closed the valve will provide a, perfectly fluid tight closure so that no fluid can pass through the valve housing.

.It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts provided that such changes fall within the scope of the appended claim.

Having described the claimed as new is:

In a device of the class described, a supporting member having a, centrally arranged circular part invention, what is on its top, an annular seat forming part surrounding the circular part and arranged in a lower plane than the top of the circular part and a wide part surrounding the seat forming part and arranged in a lower plane than the seat forming part, a cylinder having its lower end open with the circular part fitting in said lower end, an outwardly extending flange at the lower end of the cylinder fastened to the seat forming part, a piston in the cylinder, a rod connected with the piston and passing through one end of the cylinder, a pair of vertically arranged pipes paralleling the cylinder and having their ends bent and connected with upper and lower portions of the cylinder, a pair of valves in each pipe and spaced apart, a third pipe connected with one of the other pipes between the valves in said pipe, a fourth pipe connected with the other one of said pair of pipes between the valves of such pipe, 2. fluid tank supported on a portion of the wide part of the supporting member and to which the fourth pipe leads, a pump supported on another portion of the wide part of the supporting member and to the outlet of which the third pipe is connected, a conduit connecting the inlet of the pump with the tank and containing a check valve opening toward the pump, a hand lever for actuating the pump piston, and a bracket to which the hand lever is pivoted connected with the flange of the cylinder.

' JAMES W. CHILDRESS. 

